Daring in Order to Know that was Bengt Sundkler's title of his lecture when he as Bishop of Bukoba - and Professor Upsaliensis on leave from his Alma Mater - summarized the history of the International Missionary Council on the eve of its integration with the World Council of Churches in New Delhi on 17th November 1961. As a title Daring in Order to Know is a fitting pointer also to characteristic features in Bengt Sundkler's own scholarly contribution. Courage, concerned commitment and understanding involvement in people inform his analysis. Artistic ambitions inspire the form of presentation of his results. That is why we have decided to call this Festschrift, "Daring, in Order to Know": Studies in Bengt Sundkler's Contribution as Africanist and Missionary Scholar.

The possible use of plastic replicas in lithic use wear anaysis is explored. It can be shown that within the existing observational techniques involving metallographic light microscopes with magnifications up to 400 x that plastic replicas of flint surfaces replicate the surface at a very detailed level. It is detailed enough to permit analysis of microwear traces and can thus be used as substitutes for original tool surfaces when they for different reasons are not available and when the surface to be inspected is to curved to admit scanning with light microscope. It can also be shown that white, ligth reflecting flint surfaces is easier analyzed using a replica surface.